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Extech EA25 EasyView Hygro-Thermometer and Datalogger with NIST

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Extech EA25 EasyView Hygro-Thermometer and Datalogger with NIST


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Extech EA25 EasyView Hygro-Thermometer and Datalogger with NIST

Extech EA25 EasyView Hygro-Thermometer and Datalogger with NIST



EA25 EasyView Hygro-Thermometer and Datalogger with NIST by Extech


  • Datalogs up to 15,000 records plus automatic timer function
  • Built-in RS-232 PC serial interface comes complete with Windows® 95/98/NT/2000/ME/XP compatible software and optically isolated RS-232 cable
  • Compact and rugged design features large display and bargraph
  • Display any two parameters (Temperature and Humidity or Dew Point, or Wet Bulb) simultaneously
  • Min/Max function stores & recalls highest and lowest readings
  • Timer function displays the elapsed time (mins : secs and day : hour) to the minimum and maximum readings
  • Programmable auto power off time frame
  • Remote capacitance sensor with 39" (1m) coiled cable
  • Switchable °C/°F temperature units
  • Data Hold function freezes reading on display
  • Auto power off to save battery life
  • Low battery and overrange indication
  • Complete with built-in stand, protective holster, probe and 6 AAA batteries


  • Monitor Relative Humidity and Temperature in factories, clean rooms, offices, and greenhouses
  • Produce reports of overnight or long term humidity and temperature fluctuations
General Specifications
Display Multifunction LCD with bargraph and status indicators
Sensor Type Humidity: capacitance sensor; Temperature: thermistor
Response Time Humidity: 45% to 95% < 1 min; 95% to 45% < 3 min.
Temperature: Approx. 2 seconds for a 10°C change
Reading Rate 2 readings per second
RS-232 PC Interface Optical connection with supplied interface cable. Software compatible with Windows™ XP, Vista and Windows 7 systems
Datalogger storage Stores 99 sets of data in manual mode (15,000 in auto mode)
Sampling Intervals 3 to 255 seconds (1 to 86,400 sec. using supplied software)
Operating Conditions 32 to 140°F (0 to 60°C); < 95% RH non-condensing
Storage Conditions 14 to 140°F (-10 to 60°C); <70% RH non-condensing
Power Supply 6 x 1.5V 'AAA' batteries
Auto power off After 30 minutes of inactivity
Battery Life Approx. 200 hours
Dimensions / Weight 5.9 x 2.8 x 1.4" (150 x 72 x 35mm); 8.3 oz. (235g)

Rnage Specifications
Range and Resolution
10.0 to 95.0% RH
±3% RH (at 25°C, 30 to 95% RH )
±5% RH (at 25°C, 10 to 30% RH )
-4 to 140°F (‐20 to 60°C)
±1.8°F (±1°C)

Datasheets & User Manuals

Questions & Answers

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